The method comprises the following steps:
1. Open the WORD document to be operated, and click "manuscript paper settings" in the page layout tab.
2. Select "Square manuscript paper" in the option box behind the format, and set the paper as square paper.
3. Return to the main document and find that the page is set to grid paper successfully.
4. Similarly, in the manuscript paper setting, select "line manuscript paper" to set the paper as horizontal paper.
5. Return to the main document and find that the page has been set to horizontal paper, and the related operations are completed.